A Telemarketing Company Wants to Compare the Effectiveness of Five

Multiple Choice

A telemarketing company wants to compare the effectiveness of five of its employees by looking at the percentage of survey questions completed.Data from four past surveys are randomly chosen for each of the employees,and the percentage of completed questions is calculated.The box plots for the five employees are shown below.

A) Yes,the widths of all the boxes are the same.
B) No,the data need to be log-transformed before conducting the ANOVA.
C) Yes,the spreads of the five box plots appear similar enough to satisfy the assumption.
D) No,the centre line for employee four is lower than all of the others
E) No,the data probably need to be re-expressed before conducting the ANOVA.